Apparatus for washing coffee and the like.



R. OKRASSA.

APPARATUS FOR WASBING COFFEE AND THE LIKE.

APPLIOA'IIOH FILED 315F130, 1911.

Paaeuted Jan. 2, 191? m mw SES ROBERTO IOKRASSA, .OF ANTIGUA, GUATEMALA.

To all whom it may concern:

Be it known that I, ROBERTO OKRASSA, a subject of'the GermanEmperor andKing of Prussia, and residing at Antigua, Gautemala, Central America,have invented a certain new and useful Improvement in Apparatus forWashing Cofiee and the Like, of which the following is a specification.-

This invention relates to an improved apparatus for washing cofiee andthe like of the kind comprising a drum or drums fitted or each fittedwith heaters and revolving within a cylinder or cylinders throu hwhich'the coffee is fed and wherein the co ee is brought into intimatecontact with water and washed free of impurities. Apparatus comprising apair of such cylinders each fitted with a drum is hereinafterparticularly described with reference to the accompanying drawings inwhich- Flgure '1 is a -partlongitudinal section and part side elevationFig. 2 is an end 'der and drum.

view; and Fig. 3 a cross section of the cylin- I will proceed todescribe in construction of the front cylinder a of a pair of similarcylinders a and a and of the parts cooperating therewith.

and provided with end flanges b to which are fastened end plates 0 and(Z carrying inlet and-discharge hoppers e and f respectively,

andstuffing boxes g. Coaxially with the cylinder a is disposed a shaftin revolving in the stufiing boxes 9 and supported bystandards jprovided with suitable extensions for attachment to the cylinder ends.Fixed on the shaft h is a drum]: spaced from the walls 0f the cylinder.and secured to end castings Z and m. The cylinder at is advantageouslyformed of steel plate bent so as to form rather fiat longitudinallydisposed cor- 4 rugations a, as best shown in Fig. 3; and to theexterior of the drum are fitted a number of longitudinal radiallyprojecting heaters 0 of angle-iron orother suitable material' disposedobliquely to the axis of the drum. i

It will be understood that thecofi'ee entering the inlet end of thecylinder at from the hopper e is caught by the heaters and passed alongtoward the opposite end of the cylinder and thence 'to the dischargehopper f;- 5

the coffee being thus brought into intimate contactwitlfl the Water inthe cylinder and Specification of Letters Patent.

detail the APPARATUS FOR WASHING COFFEE AND THE LIKE.

ram-ea Jan. 2,1912.

Application filed September ,30, 1911 Serial No. 652,171.

washed freeof impurities. For dealing with large quantities of coffee,in order to economize the washing water, two parallel cylinders orcylindrical casings a and a are. placed side by side, as best shown inFig. 2. A helical or other conveyer p arranged in a perforated trough7;, connecting the parallel cylindrical casingsor cylinders a and adelivers the coffee from the discharge hopper f of the first cylinder ato the inlet hopper e of the second cylindera in which the coffee issubjected to a final washing op eration succeeding the preliminarywashing operation effected in the cylinder a, the coffee being finallydischarged at the hopper As ,the coffee must pass through the cylinder ain the direction opposite to that of its passage through the cylinder a,the heaters on the drum revolving within the second cylinder areinclined oppositely to those on the drum revolving within the firstcylinder.

The underside of the conveyer trough is advantageously perforated forthe purpose of drawing off dirty water from the coffee inits passagefrom one cylinder to another. The shaft 71- revolving within the firstcylinder a is driven by means of a pulley q; a pulley r on the sameshaft is connected by a belt 8 to a similar pulley t on the shaft k ofthe second cylinder.

For driving the conveyer, motion is transmitted from the shaft h bymeans of chain and sprocketgear u to a shaft 1) carried on anextension'w of the hopper f and fitted with a bevel 'wheel m meshingwith a bevel .wheel y on the conveyer shaft.

It will be seen from the drawing that the cylinders are of considerablediameter and the inlet and discharge hoppers are advantageously locatedin relation to the cylinders. As the bearings for the shafts areentirely outside-the cylinders, there is no danger of the water washingthe oil from the bear-- ings. The grating for removing the dirty. wateris not liable to be choked and in fact practically constitutes aself-cleaning-filter.

Having now described my invention what I claim and desire 'to secure byLettersPatent of the United States.is:- 1

- 1. The improved cotfeet washing apparatus, comprising, incombination,a plurality of separated cylinders disposed parallel to each other,inlet and discharge hop-'.

IQO.

transversely of the axes of the cylinders and connecting the dischargehopper of one cylinder with the inlet hopper of an adjoining cylinder,and a rotary conveyer vorking in said trough.

2. The improved coffee Washing apparatus, comprising in combination. apair of corrugated cylinders disposed parallel to each other and eachprovided with inlet and discharge hoppers, standards located outsidesaid cylinders, drums, one on each shaft,

each drum fitted within a cylinder, said drums being provided withradially projecting beaters disposed obliquely to the 15 axes of theirrespective shafts, a rotary eonveyer disposed transversely of the axesof the cylinders, a perforated trough connecting the discharge hopper ofone cylinder with the inlet hopper of the other cylinder and in whichsaid conveyer' Worksmeans for driving the shafts, and means for drivingthe conveyer.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERTO OKRA-SSA.

Vi tnesses At'oi'sro SCHAROOH, F. Born.

